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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment.

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Old 13th Sep 2019, 2:37 pm   #1
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Default Ultra record player.

I have a problem with a 1970 ultra record player, solid state amp, not sure of the model number (not being much help here) but its in a teak cabinet with a black padded lid, controls are on the right side looking up on a brushed ali fascia. Anyway the problem is that on initial switch on the volume is very low until left for a good 3 to 4 mins, then it increases to normal. This only happens when it is switched off for a long time (like a day), if it is switched off for a few hours its fine. Cap fault maybe??
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Old 13th Sep 2019, 4:53 pm   #2
Edward Huggins
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Default Re: Ultra record player.

This sounds like it could be a capacitor charging problem. It all depends on how irritating this is to you and how far you are prepared to go to get it sorted. What skils do you have in voltage measuring and fault finding on these early transisitor amplifiers - also can you read a circuit diagram? The model number will be inside/at the rear and a circuit can probably be downloaded from this site.
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Old 16th Sep 2019, 4:12 pm   #3
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Default Re: Ultra record player.

not to bad with basic meter,and ok reading circuits,will find the model number if i can and take it from there ,the prob isnt too annoying but it would be nice to see it working each time its used ,
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